News Letter Winter 2011
InspecTech®
A Division of InspecTech Analygas Group Inc.
450 Midwest Road, Toronto, Ontario, Canada, M1P 3A9
Tel: 416-757-1179      Fax: 416-757-8096
Email: group@inspectech.ca    Web: www.inspectech.ca

ULTRASONIC  GAUGING AIDS COPPER TUBING PRODUCER

Meet The People

Mary Jane Turchan

Mary Jane, or “MJ” as she is known around the office, is a comparative newcomer with just 4 years at InspecTech. Mary Jane is our full-cycle bookkeeper and also the voice that you will hear on the after-hours telephone message.

MJ graduated in bookkeeping from the Toronto School of Business in 2000. Ever helpful, she will be happy to assist you with any questions or concerns you may have over invoicing and accounts.

Vol.6 No.2 Winter 2011
The InspecTech Inquirer

We Wish All A Very Merry Christmas And A Safe And Prosperous New Year!

During 2011 InspecTech commissioned an ultrasonic eccentricity monitor for the copper tubing industry. It has been an interesting departure from our usual weld testing activities.

The manufacture of copper tube and pipe involves several steps. Base extrusions referred to as shells that are made from heated copper billets. These rough extrusions are later re-drawn into the copper tube and pipe that is found in homes and many industrial applications.


For the final drawing processes the shells must meet certain concentricity standards. It is generally true that concentricity is less reliable at the leading and trailing ends of the shell, and this is where ultrasonic testing comes in.

The new Inspectech

unit clamps onto the

product and measures wall thickness and Calculates

concentricity as the

shell passes through.

When concentricity becomes acceptable, the system signals to stop and crop the unusable end from the shell. After cutting, the shell continues through the system, during which time the concentricity continues to be measured and recorded. The direct measurement of concentricity replaces the oldermethod of cutting and scrapping a fixed length from each shell, greatly enhancing productivity.


At the conclusion of the test cycle, the remaining product is known to be within limits, and it is also graded by colour marking to 3 standards of concentricity overall. If standards are not met, the entire piece is rejected.  A “cut to weight” feature helps to reduce wasted material in the process.


The tendency for the shells to be soft and bendy raised some tough mechanical design issues. The test head not only clamps onto the product, it also has “floating” suspension with many degrees of freedom. The clamping mechanism involves a semi-rotary movement to bring all 8 transducer assemblies to bear on the product at 45° intervals.



Redefining Ultrasonic Field Inspections of Welded Tubular Goods.

New UT Crab Advancements


InspecTech has manufactured customized NDT

solutions for the tube & pipe industries for over

30 years. We are always exploring new

technologies and innovative ways to meet

customer's ever-evolving NDT requirements.


Recently, a portable ultrasonic “crab” inspection

system was manufactured and commissioned

for Tejas Tubular Products Inc., Casing Facility

located in Houston Texas.  The crab was made

to inspect the weld-lines of finished tubes used

for oilfield casings and line pipes;inspecting to

API-5L and API-5CT standards. In this application

the operator walks on the tubes being inspected,

and the portable crab was required to be a

“walking” version, versus a more traditional hand-held design.


InspecTech's UT crabs were developed from the success of our fixed system  predecessors, not from common and limited hand-held UT devices.  The portable crabs operate with the same ultrasonic principles as InspecTech's on-line inspection units, utilizing focused transducers designed specifically for inspecting tube & pipe using a water column effect.


The electronic cabinet and coupling liquid tank are connected to the crab via a 100ft services umbilical. The crab also comes with audible and visual alarms to notify the operator of detected anomalies in the OD and ID locations independently.